Control of liquid crystal pretilt angle by anchoring competition of the stacked alignment layers

You-Jin Lee; Jin Seog Gwag; Young-Ki Kim; Soo In Jo; Seung-Gon Kang; Young Ran Park; Jae-Hoon Kim
January 2009
Applied Physics Letters;1/26/2009, Vol. 94 Issue 4, pN.PAG
Academic Journal
We proposed a method to control the pretilt angle of liquid crystals by stacking of a vertical alignment layer on a planar alignment layer. The pretilt angle can be controlled over the full range (0°–90°) depending on the thickness of the vertical alignment layer. We also proposed a numerical model to describe the physical mechanism based on the anchoring competition between liquid crystal, planar, and vertical polyimide alignment layers.


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